[esp-r] Re: Hydronic floor in solar heating system

[Marco Manzan]

In data giovedì 14 novembre 2013 08:59:00, Ragnhild Haukland Løge ha scritto:
> Hello,
> 
> I am trying to model a solar heating system with a hydronic floor. I
> have a functioning control file with three components: solar
> collector, tank and pump.
> 
> I want to replace the tank with a hydronic floor so the heat from the
> solar collector is transferred to a layer within the ground floor. I
> tried to do it in the exact same way as for the tank, only using a
> hydronic floor, but the model will not simulate.
> 
> I also tried to set up the plant system so that there is both a tank
> and a hydronic floor but this did not work either.
> 
> Does anyone have any experience using the "slab-on grade hydronic
> floor" or have any suggestions as to what I can do to fix the model?
> 
> Both control files can be seen in the attachment.
> 
> Kind Regards
> Ragnhild Løge

dear Ragnhild

have you checked the output temperature from the floor? if the difference 
between the collector temperature and this value is below 5 K the mass flow, 
according to your file is 0. 

Marco
--
 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _        
|Marco Manzan               Email: manzan at units.it    |        
|Tel:   (+39) 040 5583506   Fax  : (+39) 040  572033  |        
|Dipartimento di Ingegneria e Architettura            |       
|Universita' degli Studi di Trieste                   |        
|piazzale Europa 1, 34127 TRIESTE                     |        
|_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _|